benchlm.ai

Claude 3 Opus vs Gemini 3 Flash

Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.

Quick Verdict

Gemini 3 Flash wins overall with a score of 58 vs 51 (7 point difference).Gemini 3 Flash wins 4 out of 4 categories.

Claude 3 Opus

CreatorAnthropic
TypeProprietary
Context200K
Score51

Gemini 3 Flash

CreatorGoogle
TypeProprietary
Context1M
Score58

Knowledge

Gemini 3 Flash

Claude 3 Opus

59.5

Gemini 3 Flash

67.8

61
MMLU
70
61
GPQA
69
59
SuperGPQA
67
57
OpenBookQA
65

Coding

Gemini 3 Flash

Claude 3 Opus

53

Gemini 3 Flash

62

53
HumanEval
62

Mathematics

Gemini 3 Flash

Claude 3 Opus

60

Gemini 3 Flash

69

61
AIME 2023
70
63
AIME 2024
72
62
AIME 2025
71
57
HMMT Feb 2023
66
59
HMMT Feb 2024
68
58
HMMT Feb 2025
67
60
BRUMO 2025
69

Reasoning

Gemini 3 Flash

Claude 3 Opus

58

Gemini 3 Flash

66

59
SimpleQA
67
57
MuSR
65

Frequently Asked Questions

Which is better, Claude 3 Opus or Gemini 3 Flash?

Gemini 3 Flash scores higher overall with 58 vs 51, a difference of 7 points across all benchmarks.

Which is better for knowledge tasks, Claude 3 Opus or Gemini 3 Flash?

Gemini 3 Flash leads in knowledge tasks with an average score of 67.8 vs 59.5.

Which is better for coding, Claude 3 Opus or Gemini 3 Flash?

Gemini 3 Flash leads in coding with an average score of 62 vs 53.

Which is better for math, Claude 3 Opus or Gemini 3 Flash?

Gemini 3 Flash leads in math with an average score of 69 vs 60.

Which is better for reasoning, Claude 3 Opus or Gemini 3 Flash?

Gemini 3 Flash leads in reasoning with an average score of 66 vs 58.

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